Object slicing refers to assignment by value of a sub-class instance to a super-class instance,thereby losing part of the information i.e. the sub-class specific data members are ignored.
Questions tagged [object-slicing]
220 questions
-1
votes
1 answer
Python: Two objects seem to be referencing the same variable even though I do not have any explicit connection between them
I am trying to change an octet based on the mask I have.
Lets say I have IP: 194.216.35.54 and mask- 27, I need to change the 4th octet (3 when counted from 0). I am trying to change the values in the work_octets variable. But, somehow, the values…
vamsi465
- 15
- 1
- 7
-1
votes
1 answer
C++ example when catching exception by value is bad
I know that when catching an exception by value, copy constructor is called, but is there anything bad when catching by value or not by reference and can you give a specific example when the bad thing happens if catching by value?
(I mean except the…
Andrey Rubliov
- 1,359
- 2
- 17
- 24
-1
votes
3 answers
Is the reason fot the error object slicing?
g++ -std=gnu++0x main.cpp
In file included from main.cpp:6:0:
CustArray.h: In constructor 'CustArray::CustArray()':
CustArray.h:26:32: error: 'class Info' has no member named 'someInfo'
make: *** [all] Error 1
/*
* Info.h
*
*/
#ifndef…
user383352
- 5,033
- 4
- 25
- 20
-1
votes
1 answer
Does slicing occur with unique_ptr?
I have a pointer which sliced, but I don't exactly know where and why.
There are two lines of code which I think could lead to splicing:
The creation of a unique pointer:
map.insert(make_pair("ChildA", unique_ptr
Yaxlat
- 665
- 1
- 10
- 25
-2
votes
1 answer
How to hide param type of template base class
Not sure if this is even possible but here goes...
I'm trying to hide the param of a template base class by doing the following:
Expose a common interface
Implement template base class that implements the common interface
Implement several concrete…
TV1989
- 39
- 6
-2
votes
1 answer
Using lots of static casting for my array of base class objects - is this ok?
Is a lot of static casting a bad idea ? Is there a way to avoid static casting when using containers whose element type is a base class of some subclass hierarchy?
Example: The case of using
std::vector
to store game objects. These…
user3220058
- 69
- 6
-2
votes
1 answer
Use of References or Pointers in Interfaces in C++
I am writing a library in C++, and was wondering about the use of references and/or pointers in place of the interfaces (i.e., use of (abstract) base classes as a placeholder for derived classes).
The question is, which one of the two should I go…
Arda Aytekin
- 1,231
- 14
- 24
-3
votes
2 answers
how to over come the issue of object slicing in c++
How should I get rid of the problem with object slicing in c++.
In my application if the derived class has some dynamically allocated pointer and derived class object is assigned to base class object, the behavior is memory corruption!
srinuvenu
- 475
- 1
- 5
- 11
-3
votes
1 answer
Best way to pass multiple child classes in c++
Lets assume we have a base class Base
class Base{
virtual double GetNumber();
}
and multiple child classes (let's call them 'A', 'B' and 'C') that look like
class A : public Base{
double GetNumber(){return 1;};
}
Now I do have another class which…
Django
- 5
- 4
-3
votes
3 answers
Force a derived-class object to use its own function, not the base-class one
I have some doubts about subclasses in C++. I have this code:
class BaseClass() {
BaseClass();
void doSomething();
}
class SubClass : public BaseClass {
SubClass();
void doSomething();
}
When I declare a BaseClass object that could…
JotaEle
- 154
- 8